Struct ParserSemanticPredicate 

pub struct ParserSemanticPredicate {
    pub rule_index: usize,
    pub pred_index: usize,
    pub expr: ExprId,
    pub failure_message: Option<&'static str>,
}

Parser predicate coordinate lowered into SemIr.

Fields

rule_index: usize

Serialized rule index that owns this predicate.

pred_index: usize

Predicate index inside the owning rule.

expr: ExprId

Root expression in the associated ParserSemantics::ir arena.

failure_message: Option<&'static str>

ANTLR <fail='...'> message for predicates that intentionally fail.

Trait Implementations

impl Clone for ParserSemanticPredicate

fn clone(&self) -> ParserSemanticPredicate

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ParserSemanticPredicate

impl Debug for ParserSemanticPredicate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ParserSemanticPredicate

impl PartialEq for ParserSemanticPredicate

fn eq(&self, other: &ParserSemanticPredicate) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ParserSemanticPredicate